Improved stump-exteactor



JOHN G. BOYER, OF SPRINGFIELD, ASSIGNOR TO MOSES WIANT ANDV GEORGE GORR, OF LEHIGH COUNTY, PENNSYLVANIA.

Letters Patent No. 78,920, detect June 16, 1868; anteclateol .Manch 27, 1868.

IMPROVBD S'I'UMP-EXTRAG'I'OB..

' IO ALL WHOM I'I MAY CONOERN:

Be it known that I, JOHN G. Borna, of Springfield, in the county of Bucks, and State of Pennsylvania, have invented certain new and useful Improvements in Portable Powers for farm use; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this speeilication, and to the letters-of reference marked thereon, like letters indicating like parte wherever they occur.

To enable others skilled in the art to constructand use my invention, I will proceed to describe it.

My invention relates to portable powers for farm use, and consists in a novel construction and arrangement of mechanism for extracting or pulling up stumps, raising heavy stones, and for other and similar purposes upon a farm.

Figure 1 is a top plan view, I

Figure 2 is an end view, and

Figures 3 and 4 are views of parts detached.

In constructing my portable power, I make a strong frame, A, of timber, of any size desired, by taking two cross-pieces, B, and connecting them with the longitudinal pieces C. To the pieces G, Iframe fouruprights, D, and connect their upper ends with the cross-pieces E. This frame I strengthen with suitable braces, a Z1, so as to make it irm and strong, as shown in iigs. 1 and 2. l

To the upper side of the cross-pieces E, I attach journal-boxesbr bearings, e and d, equally distant from each other, on each of the cross-pieces E. In the journal-boxesc, which are placed in or near the centre of the cross-pieces E, I mount a strong windlass, F, and firmly key to it two spurt-wheels, e, one near each end of its bearings, as shown in fig. l. y

In the boxes or bea-rings CZ, I mount a shaft, G, made long enough to extend sufficiently far beyond the cross-pieces E to have keyed to its projecting ends two spurwheels,f. On ythis shaft G,.I key two pinions, g, just within the cross-pieces O, and so arranged as to gear into thc spur-wheels e, as shown in fig'. l.

The spur-wheelsf, I arrange to gear into pinions h, which are firmly attached to crank-shafts I-I, which have their bearings in the cross-pieees E and arms z', which latter are attached to the cross-pieces E, as clearly shownin figs. I and 2. To the crank-shafts H, I attach the cranks I.

By this arrangement, it will be seen that, as the cranks I are turned, they communicate motion tothe spurwheelsf through the pinions z, and that the spur-wheels in turn, communicate motion to the spur-.wheels e through the pinions g, and that thespur-wheels e turn the windlass F, as clearly shown in iig. 1. l

To the windlass F, I attach a chain or rope, j, and provide it with two movable hooks, l, and with one, m, attached to its extreme end, as clearly shown in fig. 3, for the purpose of conveniently bitching on to the object to be moved. The front ends of the pieces C, I curve, as shown in fig. 4, so that, when my power is mounted on a wagon, they will not interfere with the wheels.

On the sides of the cross-pieces E, I place pawls 7c, to catch into and hold the spur-wheelsf when desired, as shown in iig. 2.

In operating my portable power, I take it to the place where it is tobe used; then attach the chain to the object to be elevated; turn the cranks I, which, through the pinions and spur-wheels above described, will cause the windlnss F to revolve, and the object to which the chain 4is attached to move. i When the object, whether a stump or stone, is raised, in this way, from its bed, it may be removed when desired. Y

In this way, I am able to construct and furnish a cheap and convenientl portable power for farm use, as described.

Having thus described my invention, what I claim, is

The portable power, consisting of the mechanism arranged substantially as described, and provided with the chain j, having movable hooksl and the stationary hook m, all mounted on the frame A, constructed as set forth.

JOHN G. BOYER.

Witnesses:

A. F. WILLMEN, NATHAN MILLER. 

